The body of a passenger aboard the Sewol ferry which sank in the water off the southern coast, is carried by rescue workers upon arrival at a port in Jindo, south of Seoul, South Korea Saturday.

JINDO, South Korea — The South Korean ferry that sank was crippled by confusion and indecision well after it began listing, a radio transcript released Sunday showed, suggesting the chaotic situation may have added to a death toll that could eventually exceed 300.

About 30 minutes after the Sewol began tilting, a crew member asked a marine traffic controller whether passengers would be rescued if they abandoned ship off South Korea’s southern coast. The crew member posed the question three times in succession.

That followed several statements from the ship that people aboard could not move and another in which someone declared that it was “impossible to broadcast” instructions.

Many people followed the captain’s initial order to stay below deck, where it is feared they remain trapped. Fifty-eight bodies have been recovered, and about 240 people are still missing.

“Even if it’s impossible to broadcast, please go out and let the passengers wear life jackets and put on more clothing,” an unidentified official at Jindo Vessel Traffic Services Center urged at 9:24 a.m. Wednesday, 29 minutes after the ferry first reported trouble, according to the transcript released by South Korea’s coast guard.

“If this ferry evacuates passengers, will you be able to rescue them?” the unidentified crew member asked.

“At least make them wear life rings and make them escape!” the traffic-center official responded.

“If this ferry evacuates passengers, will they be rescued right away?” the crew member asked again.

“Don’t let them go bare — at least make them wear life rings and make them escape!” the traffic official repeated. “The rescue of human lives from the Sewol ferry ... the captain should make his own decision and evacuate them. We don’t know the situation very well. The captain should make the final decision and decide whether you’re going to evacuate passengers or not.”

“I’m not talking about that,” the crew member said. “I asked, if they evacuate now, can they be rescued right away?”

The traffic official then said patrol boats would arrive in 10 minutes, though another civilian ship was already nearby and had told controllers that it would rescue anyone who went overboard.

The ferry sank with 476 people on board, many of them students from a single high school. The cause of the disaster is not yet known, but prosecutors have said the ship made a sharp turn before it began to list. Several crew members, including the captain, have been arrested on suspicion of negligence and abandoning passengers.

More than 170 people survived the sinking of the Sewol, which had been on its way from the South Korean port city of Incheon to the southern island of Jeju. The captain took more than half an hour to issue an evacuation order, which several passengers have said they never heard.

The confirmed death toll jumped to 58 as divers finally found a way inside the sunken vessel and quickly discovered more than a dozen bodies. They had been hampered for days by strong currents, bad weather and low visibility.

Families of the missing are staying on Jindo Island, where information sheets taped to the walls of a gymnasium offered details to help identify any corpses, including gender, height, length of hair and clothing.

It was too little for Lee Joung-hwa, a friend of a crew member who is among the missing.

“If only they could have made some kind of image of the person’s face. Who can tell who this person is just by height and weight?” Lee said.

A woman with a blue baseball cap shouted at government officials who were seated nearby, working at their desks. “I can’t live like this! I’m so anxious!” she yelled. “How can I trust the police?”

Anguished families, fearful they might be left without even their loved ones’ bodies, vented rage Sunday over the government’s handling of the crisis.

About 100 relatives attempted a long protest march to the presidential Blue House in Seoul, about 250 miles to the north, saying they wanted to voice their complaints to President Park Geun-hye. They walked for about six hours before police officers in neon jackets blocked a main road.

“The government is the killer,” they shouted as they pushed against a police barricade.

“We want an answer from the person in charge about why orders are not going through and nothing is being done,” said Lee Woon-geun, father of 17-year-old missing passenger Lee Jung-in. “They are clearly lying and kicking the responsibility to others.”

Earlier Sunday, relatives of the missing blocked the car of Prime Minister Chung Hong-won and demanded a meeting with Park as Chung made a visit to Jindo. Chung later returned to the gymnasium, but met only with a number of representatives of the family members in a side office.

On Sunday evening, dozens of relatives who gathered at the port in Jindo surrounded the fisheries minister, Lee Ju-young. They shouted, swore, yelled threats and pushed him as he was on his way to a meeting with other officials.

“After four or five days, the body starts to decay. When it’s decayed, if you try to hold a hand, it might fall off,” he said. “I miss my son. I’m really afraid I might not get to find his body.”

The Sewol’s captain, Lee Joon-seok, 68, was arrested Saturday, along with one of the ship’s three helmsmen and the 25-year-old third mate. The third mate was steering at the time of the accident, in a challenging area where she had not steered before, and the captain said he was not on the bridge at the time.

Senior prosecutor Yang Jung-jin said the third mate has refused to tell investigators why she made the sharp turn. Prosecutors have not named the third mate, but a fellow crew member identified her as Park Han-kyul.

As he was taken from court in Mokpo on Saturday, the captain explained his decision to wait before ordering an evacuation.

“At the time, the current was very strong, the temperature of the ocean water was cold,” Lee told reporters, describing his fear that passengers, even if they were wearing life jackets, could drift away “and face many other difficulties.”

He said rescue boats had not yet arrived, and there were no civilian vessels nearby.